Ubuntu

This page is dedicated to the Ubuntu Linux distribution or derivatives

Administration

Remove old kernels from GRUB

To remove old kernel entries in GRUB ([1] and [2], or other sol [3])

sudo apt-get remove --purge 2.6.28-11-*     #to remove kernel 2.6.28-11

Devices

To see information on all connected input devices:

cat /proc/bus/input/devices

I: Bus=0003 Vendor=0c16 Product=0002 Version=0110
N: Name="Gyration Gyration RF Technology Receiver"
P: Phys=usb-0000:00:06.1-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:06.1/usb3/3-1/3-1:1.0/input/input7
U: Uniq=
H: Handlers=kbd event7 
B: EV=10001f
B: KEY=837fff 2c3027 bf004444 0 0 1 c04 a27c000 267bfa d941dfed e09effdf 1cfffff ffffffff fffffffe
B: REL=40
B: ABS=1 0
B: MSC=10

Medibuntu

• Medibuntu home page
• Medibuntu community

To install the Medibuntu repositories (see here)

sudo wget http://www.medibuntu.org/sources.list.d/`lsb_release -cs`.list --output-document=/etc/apt/sources.list.d/medibuntu.list && sudo apt-get -q update && sudo apt-get --yes -q --allow-unauthenticated install medibuntu-keyring && sudo apt-get -q update

Troubleshoot

CIFS shares not properly unmounted during shutdown

When shutting down the PC with Samba (CIFS) shares mounted, the shutdown sequence hangs with the following error messages:

CIFS VFS: server not responding
CIFS VFS: no response for cmd 50 mid xxx 

This is apparently a bug that is creeping in Ubuntu since a long time ago. Basically there are 2 possible fixes (as in [4], [5], [6]):

The one I use, proposed by Daniel Ellis here [[7]]:

sudo mv /etc/rc0.d/S31umountnfs.sh /etc/rc0.d/K31umountnfs.sh
sudo mv /etc/rc0.d/S40umountfs /etc/rc0.d/K40umountfs
sudo mv /etc/rc6.d/S31umountnfs.sh /etc/rc6.d/K31umountnfs.sh
sudo mv /etc/rc6.d/S40umountfs /etc/rc6.d/K40umountfs

Another one (not tried yet):

sudo ln -s /etc/init.d/umountnfs.sh /etc/rc0.d/K15umountnfs.sh
sudo ln -s /etc/init.d/umountnfs.sh /etc/rc6.d/K15umountnfs.sh